"I was just so angry, because you can get injured," said the Russian, who fell in the first set as she rushed to the net to retrieve a drop shot, but couldn't slide.

Earlier, Jankovic began her defense of the Rome title with a 6-3, 7-6 (6) win over Gisela Dulko. The match was suspended for about three and a half hours due to rain.

In other matches, seventh-seeded Svetlana Kuznetsova beat Daniela Hantuchova 6-3, 6-3, and eighth-seeded Nadia Petrova beat Carla Suarez Navarro 6-2, 3-6, 6-3.

Caroline Wozniacki, Flavia Pennetta and Kaia Kanepi also advanced, while 11th-seeded Marion Bartoli and Alize Cornet were both upset.

The 13th-seeded Cornet, last year's runner-up, lost 6-4, 6-1 to Kateryna Bondarenko, and Maria Jose Martinez Sanchez beat Bartoli 6-1, 7-5.

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